I don't have a printer, so, I was printing things I found useful on Thingiverse on a local library printer = send in file, get file approved and set up to print and then come in at my scheduled time to do my parts = PITA! Now, even that's gone.
FWIW, there's a guy in Maine whom I've used who is very reasonable. He charges by the gram of material and postage to ship. His email address is:
[email protected]
In addition to the STL files, he would also like a reference like the Thingiverse # so he can get the setup parameters.
I tried using Tinkercad and had a hard time trying to get my dimensions and shapes what I wanted them to be. I'm used to using a real CADD program and couldn't get used to it.